Friedel-Crafts reaction

[free-del-krafts, -krahfts]

Frie·del-Crafts reac·tion

[free-del-krafts, -krahfts]
noun
a reaction for the synthesis of hydrocarbons and ketones by the alkylation or acylation of an aromatic compound in the presence of a catalyst, typically anhydrous aluminum chloride.

Origin:
1895–1900; after French chemist Charles Friedel (1832–99) and U.S. chemist J. M. Crafts (1832–1917), its discoverers
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Friedel-crafts reaction has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
(used as a nonsense word by children to express approval or to represent the longest word in English.)
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